diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index b6a663ba..3aff5db5 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -14,7 +14,7 @@ jobs:
             fail-fast: false
             matrix:
                 php: [ "8.1", "8.2", "8.3" ]
-                symfony: [ "^5.4", "^6.4" ]
+                symfony: [ "^6.4" ]
         name: "PHP ${{ matrix.php }} / Symfony ${{ matrix.symfony }}"
         env:
             APP_ENV: test
diff --git a/composer.json b/composer.json
index 6032658e..195798d6 100644
--- a/composer.json
+++ b/composer.json
@@ -16,12 +16,12 @@
     "require": {
         "php": "^8.1",
         "laminas/laminas-stdlib": "^3.18",
-        "symfony/config": "^5.4 || ^6.0",
-        "symfony/dependency-injection": "^5.4 || ^6.0",
-        "symfony/expression-language": "^5.4 || ^6.0",
-        "symfony/http-kernel": "^5.4 || ^6.0",
-        "symfony/stopwatch": "^5.4 || ^6.0",
-        "symfony/twig-bundle": "^5.4 || ^6.0",
+        "symfony/config": "^6.4",
+        "symfony/dependency-injection": "^6.4",
+        "symfony/expression-language": "^6.4",
+        "symfony/http-kernel": "^6.4",
+        "symfony/stopwatch": "^6.4",
+        "symfony/twig-bundle": "^6.4",
         "symfony/ux-live-component": "^2.17",
         "symfony/ux-twig-component": "^2.17",
         "twig/twig": "^2.15 || ^3.0"
@@ -32,16 +32,16 @@
         "phpstan/phpstan": "^1.10",
         "phpstan/phpstan-symfony": "^1.3",
         "phpunit/phpunit": "^9.6",
-        "symfony/console": "^5.4 || ^6.0",
-        "symfony/debug-bundle": "^5.4 || ^6.0",
-        "symfony/dom-crawler": "^5.4 || ^6.0",
-        "symfony/dotenv": "^5.4 || ^6.0",
+        "symfony/console": "^6.4",
+        "symfony/debug-bundle": "^6.4",
+        "symfony/dom-crawler": "^6.4",
+        "symfony/dotenv": "^6.4",
         "symfony/flex": "^2.4",
-        "symfony/framework-bundle": "^5.4 || ^6.0",
-        "symfony/runtime": "^5.4 || ^6.0",
-        "symfony/translation": "^5.4 || ^6.0",
-        "symfony/web-profiler-bundle": "^5.4 || ^6.0",
-        "symfony/yaml": "^5.4 || ^6.0 ",
+        "symfony/framework-bundle": "^6.4",
+        "symfony/runtime": "^6.4",
+        "symfony/translation": "^6.4",
+        "symfony/web-profiler-bundle": "^6.4",
+        "symfony/yaml": "^6.4 ",
         "symplify/monorepo-builder": "11.2.*"
     },
     "autoload": {
diff --git a/monorepo-builder.php b/monorepo-builder.php
index cfc0a18e..808c09e3 100644
--- a/monorepo-builder.php
+++ b/monorepo-builder.php
@@ -13,7 +13,7 @@
         ],
         ComposerJsonSection::REQUIRE_DEV => [
             'phpstan/phpstan' => '^1.10',
-            'symfony/debug-bundle' => '^5.4 || ^6.0',
+            'symfony/debug-bundle' => '^6.4',
             'symfony/flex' => '^2.4',
             'symplify/monorepo-builder' => '11.2.*',
             'phpstan/phpstan-symfony' => '^1.3'
diff --git a/src/TwigHooks/composer.json b/src/TwigHooks/composer.json
index a9326837..21965460 100644
--- a/src/TwigHooks/composer.json
+++ b/src/TwigHooks/composer.json
@@ -16,26 +16,26 @@
     "require": {
         "php": "^8.1",
         "laminas/laminas-stdlib": "^3.18",
-        "symfony/config": "^5.4 || ^6.0",
-        "symfony/dependency-injection": "^5.4 || ^6.0",
-        "symfony/expression-language": "^5.4 || ^6.0",
-        "symfony/http-kernel": "^5.4 || ^6.0",
-        "symfony/stopwatch": "^5.4 || ^6.0",
+        "symfony/config": "^6.4",
+        "symfony/dependency-injection": "^6.4",
+        "symfony/expression-language": "^6.4",
+        "symfony/http-kernel": "^6.4",
+        "symfony/stopwatch": "^6.4",
         "symfony/ux-live-component": "^2.17",
         "symfony/ux-twig-component": "^2.17",
-        "symfony/twig-bundle": "^5.4 || ^6.0",
+        "symfony/twig-bundle": "^6.4",
         "twig/twig": "^2.15 || ^3.0"
     },
     "require-dev": {
-        "symfony/console": "^5.4 || ^6.0",
-        "symfony/dom-crawler": "^5.4 || ^6.0",
-        "symfony/dotenv": "^5.4 || ^6.0",
-        "symfony/framework-bundle": "^5.4 || ^6.0",
-        "symfony/runtime": "^5.4 || ^6.0",
-        "symfony/translation": "^5.4 || ^6.0",
-        "symfony/twig-bundle": "^5.4 || ^6.0",
-        "symfony/web-profiler-bundle": "^5.4 || ^6.0",
-        "symfony/yaml": "^5.4 || ^6.0 ",
+        "symfony/console": "^6.4",
+        "symfony/dom-crawler": "^6.4",
+        "symfony/dotenv": "^6.4",
+        "symfony/framework-bundle": "^6.4",
+        "symfony/runtime": "^6.4",
+        "symfony/translation": "^6.4",
+        "symfony/twig-bundle": "^6.4",
+        "symfony/web-profiler-bundle": "^6.4",
+        "symfony/yaml": "^6.4 ",
         "matthiasnoback/symfony-config-test": "^4.3",
         "matthiasnoback/symfony-dependency-injection-test": "^4.3.1",
         "phpunit/phpunit": "^9.6"